OTHER ASSETS AND LIABILITIES (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Prepaid Expenses and Other Assets
Condominium receivables	$ 423,906,000		$ 423,906,000		$ 191,037,000
Condominium deposits	91,661,000		91,661,000		55,749,000
Special Improvement District receivable	72,594,000		72,594,000		72,558,000
Equipment, net of accumulated depreciation of $4.7 million and $3.9 million, respectively	18,182,000		18,182,000		18,772,000
Tenant incentives and other receivables	9,873,000		9,873,000		10,480,000
Security and escrow deposits	9,855,000		9,855,000		17,599,000
Prepaid expenses	8,205,000		8,205,000		8,474,000
Federal income tax receivable	12,106,000		12,106,000		11,972,000
Intangibles	4,124,000		4,124,000		4,045,000
Uncertain tax position asset	143,000		143,000		112,000
Other	3,080,000		3,080,000		5,347,000
Total prepaid expenses and other assets	692,631,000		692,631,000		441,190,000
Accumulated depreciation on other equipment	4,700,000		4,700,000		3,900,000
Condominium receivable expected to be collected in 2016	329,700,000		329,700,000
Condominium receivable expected to be collected in 2017	94,200,000		94,200,000
Reimbursement from a tenant	10,923,000	$ 10,701,000	21,451,000	$ 20,368,000
Accounts Payable and Accrued Expenses
Construction payables	193,847,000.000		193,847,000.000		185,731,000.000
Deferred income	114,634,000.000		114,634,000.000		117,700,000.000
Condominium deposit liabilities	87,428,000.000		87,428,000.000		50,192,000.000
Accounts payable and accrued expenses	37,687,000.000		37,687,000.000		33,928,000.000
Tenant and other deposits	32,896,000.000		32,896,000.000		31,193,000.000
Accrued interest	16,627,000.000		16,627,000.000		16,504,000.000
Accrued payroll and other employee liabilities	20,142,000.000		20,142,000.000		31,271,000.000
Accrued real estate taxes	12,935,000.000		12,935,000.000		15,134,000.000
Interest rate swaps	27,729,000.000		27,729,000.000		4,217,000.000
Above-market ground leases	2,034,000.000		2,034,000.000		2,113,000.000
Other	26,813,000.000		26,813,000.000		27,371,000.000
Total accounts payable and accrued expenses	572,772,000.000		572,772,000.000		515,354,000.000
Prepaid Expenses and Other Current Assets
Prepaid Expenses and Other Assets
Increase in prepaid expenses and other assets			251,400,000
Other increases	2,500,000		200,000
Decrease due to amortization of in-place leases	5,100,000
Reimbursement from a tenant	2,300,000
Accounts Payable and Accrued Liabilities
Prepaid Expenses and Other Assets
Construction payables			8,100,000
Accounts Payable and Accrued Expenses
Increase in accounts payable and accrued expenses			57,400,000
Increase in condominium deposits liability			37,200,000
Increase in interest rate swap liability			23,500,000
Increase in accrued payroll and other employee liabilities			(11,100,000)
Decrease in accrued real estate taxes			(2,200,000)
Other immaterial increases			1,800,000
Decrease in deferred income			3,100,000
Other immaterial decreases			(600,000)
Grandview SHG, LLC | Prepaid Expenses and Other Current Assets
Prepaid Expenses and Other Assets
Decrease in security and escrow deposits	(7,700,000)
Sale of units | Prepaid Expenses and Other Current Assets
Prepaid Expenses and Other Assets
Increase (decrease) in condominium deposits			35,900,000
Summerlin | Accounts Payable and Accrued Liabilities
Accounts Payable and Accrued Expenses
Increase in accounts payable and accrued expenses			3,800,000
AnahaWard Village Condominium | Prepaid Expenses and Other Current Assets
Prepaid Expenses and Other Assets
Increase (decrease) in condominium deposits			232,900,000
Leases, Acquired-in-Place
Prepaid Expenses and Other Assets
Net carrying amount	17,033,000		17,033,000		22,139,000
Ground Leases below Market
Prepaid Expenses and Other Assets
Net carrying amount	19,155,000		19,155,000		19,325,000
Tenant Leases above Market
Prepaid Expenses and Other Assets
Net carrying amount	$ 2,714,000		$ 2,714,000		$ 3,581,000